Physics Unit12: Sound (id: 793a84a35)

本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理

[单选题]
The sound intensity l9ofe)j3ma0 vpmyn0 :pevel 5.0 m from ay* 5 mlr)t,jezht c2r7+njjk9 point source is 95 dB. At what distance will it be 75 dB?7 j)k2y + tjn ,rmlcjezhrt*95

A. $25 \; m$
B. $50 \; m$
C. $75 \; m$
D. $225 \; m$


参考答案:  B


本题详细解析: 暂无

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